diff options
| -rw-r--r-- | migration/savevm.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/migration/savevm.c b/migration/savevm.c index e883499..5f937a2 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2069,12 +2069,9 @@ static int loadvm_postcopy_handle_resume(MigrationIncomingState *mis) /* * This means source VM is ready to resume the postcopy migration. - * It's time to switch state and release the fault thread to - * continue service page faults. */ migrate_set_state(&mis->state, MIGRATION_STATUS_POSTCOPY_RECOVER, MIGRATION_STATUS_POSTCOPY_ACTIVE); - qemu_sem_post(&mis->postcopy_pause_sem_fault); trace_loadvm_postcopy_handle_resume(); @@ -2095,6 +2092,14 @@ static int loadvm_postcopy_handle_resume(MigrationIncomingState *mis) */ migrate_send_rp_req_pages_pending(mis); + /* + * It's time to switch state and release the fault thread to continue + * service page faults. Note that this should be explicitly after the + * above call to migrate_send_rp_req_pages_pending(). In short: + * migrate_send_rp_message_req_pages() is not thread safe, yet. + */ + qemu_sem_post(&mis->postcopy_pause_sem_fault); + return 0; } |